Lathe attachment



J. V. DILLEY.

LATHE ATTACHMENT. APPLICATION FILED APR. 14, 1921.

Patented Aug. 22, 1922.

IN V E N TOR dqMEs K-D/LLf MW ATTORNEYS NI ED ST T PATENT. OFFICE! 1 :muEsyvJmLnE'Y; er nnraorr, MICHIGAN.

ILA'IHE arraeiammrr.

oiall whom it mag concern Be it known that I, JAMES: "DILLEY, a citizen of the 'Unitedfitates," and a 'resident of Detroit, in the'county ofWayne and State offMichigan, have invented" a new: and Imrovedi Lathe Attachment, of "which the ,fol

owing .is a' full, clear," and exact description.

This invention relates tolathe connections and has particular reference to; lathesused in co'nnecti-onwith thetmanufactureand' repair of watchesan'dfjewelry. v i I An objectof theiinvention is to; providea simple ran' d strong bracket upon which to support small motors to'fr'unthe ,lathe, and which can bevery'easily attachedt'o the lathe framevery' rigidlyhso as" to sup-port the. mo-

tor without vibration v Another object residesin' the provision of a connection between the motor and the lathe spindle which permits of the ready adjustment and movement of the lathe without the liability of the connection being jammed or getting ofi center.

A further object resides in the provision of means whereby all belting is eliminated, the lathe is made portable, and the lathe and its motor are balanced so that they can be used anywhere.

A still further object resides in the provision of means whereby the motor and the lathe can be instantly assembled and disassembled.

Another object resides in the provision of means whereby there is no tendency to create side pressure, to sliprto non-uniform speed of the motor, and whereby marring of the table or support on which the lathe may be mounted is avoided.

The invention is illustrated in the drawings, of which- Figure 1 represents a side view of the apparatus; t

Figure 2 is a longitudinal section through the connection shaft;

Figure 3 is a transverse vertical section taken on the line 33 of Figure 2;

Figure 4 is a transverse vertical section taken on the line i4 of Figure 2; and

Figure 5 is a sectiontaken 0n the line 5-5 of Figure 1.

As shown in the drawings, the invention is adapted to be used in connection with a lathe which is mounted on a base or pedestal 1, and

is provided with a bed 2, on which the head 1 threaded. Between the nut. 7 rand thequpper surface of the table; '2 ftl1 ereis, received rthe end of a bracket, plate Thisplate extends :jh orizontal'ly outwardly snap its other end portable motor 9;which may receives .a small be' fastened to the endof pla e ina ys yq glspccific a'tion'of Letters Patent. Patent d A g-3122313922 .a nafibamed :April14 192L Se riia1.-No.4 61,250.' i v able .Inanner, such asbylthescrewilOr A.reinforcmg plate 11 is .at one end atta ched to i the plate 8j and then bends downwardly vto engage with the; undersurface; of "the', b d 2. A stay or spacingbolt 12 extends.rigidly 'bm tween thep lateB and the plate {11' v the bed 2;

p The "motor 9 visiprovided 1,14 on'the end of which a sleeve" l5 is'held by means of a set screw 16. The set screw 16.

is of sufficient length to be received in a slot 1( 1n a connecting head 18 which is bored as at 19 to receive the end of the shaft 14 and the sleeve 15. One end of a flexible shaft or connectlon 20 is received by the head 18. This flexible shaft may be of any suitable type and length but is long enough to permit of themovement of the head stock a con-- rule 24. This ferrule embraces the end 25 1 of the flexible shaft 20. By jamming or forcingthe ferrule 24 and the split sleeve 23 into the bore 22, the end of the flexible shaft 20 is firmly gripped. The engagement of the set screw 16in the slot 17 drives the flexible shaft 20 positively from the motor 9 and yet permits the shaft to center itself without any side thrust or vibration on the other parts of the apparatus. By eliminating all side pressure, the shaft floats in the bearings, and the greater the speed, the greater the tendency to dead center. This dispenses with the use ofexpensive drills and also reduces the time required for pivoting by fifty per cent.

It will be seen that I have provided a simple, compact apparatus which can be instantly assembled and disassembled, which is rigidly attached to the frame of any, device, such as a lathe, and which operates With a minimum of disturbance by vibration of the rest of the parts of the apparatus.

Minor modifications may be made in the construction and arrangement of the apparatus Without departing from the spirit of the invention.

What I claim is:

l. A lathe bed having a slot therein, a motor, a bracket to support the motor, and an adjusting means on the end of the bracket to engage in the slot and a portion of the bracket engaging beneath the edge of the bed.

2. A motor-supporting bracket, a lathe bed having a slot therein, said bracket comprising a horizontally extending plate, an adjustlng means on the end of said plate and engaging in the slot to fasten the plate to the bed, a second downwardly extending plate on the bracket to engage beneath the edge of the bed, and a spacing bolt extending between the plates adjacent the bed.

3. An attachment for lathes which have a head stock, a supporting table and a slot in the bed, Which comprises a bracket, means on one end of the bracket to engage in the slot to fasten the bracket to the bed, a motor support on the other end of said bracket, and a flexible shaft extending from the motor to the head stock of the lathe.

at; An attachment for lathes which have a supporting bed and a head stock mounted thereon, Which comprises a bracket removably attached to the bed, a motor on said bracket, and a flexible shaft frictionally and operatively connected to the head stock at one end and loosely connected to the shaft of the motor at the other end.

5. An attachment for lathes having a supporting bed and a headstock mounted thereon, which comprises a bracket removably attached to the bed, a motor mounted on the end of said bracket, and a flexible shaft extending between the headstock and the motor, said shaft frictionally engaging at one end and loosely engaged at'the other.

6. An attachment for lathes having a supporting bed and a headstock mounted thereon, which comprises a bracket extending beyond the bed and removably attached thereto, a motor supported on said bracket, and a flexible shafting extending between the motor and the headstock.

. JAMES V. DILLEY. 

